The final paper describes vehicle braking device, which is essentialfor driving and functioning of the vehicle and its engine. Braking devices serve to slow down and completely stop the vehicle, And to ensure the vehicle's idleness while standing at a given road inclination and at all vehicle loads. The braking process is of great importance for traffic safety. It is still necessary to describe and explain the principle of brake car systems. Motor vehicles and trailer vehicles must have the appropriate stopping devices, a braking system that allows the driver to safely, quickly and effectively slow down or stop the vehicle, regardless of driving conditions. Road vehicles have only tire brakes that convert the vehicle's energy to the heat.